Perpendicular Symbol
In geometry, the perpendicular symbol is used to show that two lines are perpendicular to eachother. Visually, the symbol is made up of two lines which form a perpendicular angle.
Format  Display  Data 

Image  Download SVG ↓  
TeX 


Unicode  ⊥ 

Usage
Perpendicular Angle  Notation
A perpendicular angle is visually denoted by drawing a square at the vertex of the angle. The measured angle is equal to π/2 radians or 90°.
Perpendicular Lines  Notation
The symbol for two perpendicular lines is a horizontal line with another line drawn perpendicular to it.